---
title: "ImageGenerationRequestAspectRatio"
---

Normalized aspect ratio of the generated image. Providers clamp to their supported subset.

## Example Usage

```python
from openrouter.components import ImageGenerationRequestAspectRatio

# Open enum: unrecognized values are captured as UnrecognizedStr
value: ImageGenerationRequestAspectRatio = "1:1"
```


## Values

This is an open enum. Unrecognized values will not fail type checks.

- `"1:1"`
- `"1:2"`
- `"1:4"`
- `"1:8"`
- `"2:1"`
- `"2:3"`
- `"3:2"`
- `"3:4"`
- `"4:1"`
- `"4:3"`
- `"4:5"`
- `"5:4"`
- `"8:1"`
- `"9:16"`
- `"16:9"`
- `"9:19.5"`
- `"19.5:9"`
- `"9:20"`
- `"20:9"`
- `"9:21"`
- `"21:9"`
- `"auto"`